In each question, one sentence is given in which certain words are in bold and numbered from A to E. Below the sentence are given five options with  possible pairs of interchange of those bold words. Choose the pair(s) of words that need to be interchanged to make the sentence grammatically correct and meaningful.

The government must (A)standardization to ensure the (B)intervene and quality control of connected consumers' devices and go (C)beyond the present quality (D)checks and balances in the (E)interests of consumers.